Flushing apparatus.



A. J. COBURN.

FLUSHING APPARATUS.v

APPLICATION r|LEo1uNE24,191s.

Patented Dec. 21, 1915.`

lALBER'J J. COBURN, OF NEVI ORLEANS, LOUISIANA.

FLUSHING APPARATUS.

Lies-,22s.

Specification of Letters Patent.

Patented Dec. 21, MM5.

Application filed June 24, 1915. Serial No. 36,110.

To all whom t may concern Y Be it known that I, ALBERT J. COBURN, acitizen of the United States, residing at New Orleans, in the parishof'Orleans and State of Louisiana, have invented new and usefulImprovements inV Flushing Apparatus, of

.that way contribute to the reliable action and general efficiency ofthe apparatus notwithstanding the simplicity thereof and the smallnumber of parts it comprises. v

@ther advantageous features of the invention will be fully understoodfrom the following description and claims when the same are read inconnection with the drawings, accompanying and forming part of thisspecification, in which: f

Figure l is a vertical section showing the best practical embodiment ofmy invention that I have as yet devised. Fig. 2 is an enlargedhorizontal section taken in a plane above the non-return means of thecasing, as indicated'by the line 2--2 of Fig. l. Fig. 3 is an enlargeddetail elevation showing theside valve that I prefer to employ for thepassage of water from the tank to the interior of the vertically-movablecasing subsequently to the first low of water down the down pipe.

Referring by numeral to the said drawings: 1 is a flushing tank designedto be supplied with water in the conventional manner or any other mannercompatible with the purpose of my invention, and 2 is the down pipeclamped or otherwise suitably fixed to the bottom wall of the tank l andextending upwardly therein as shown. The said down pipe 2 is provided inits lower portion witha contraction 3 for an important purposehereinafter set forth, and at its lower end the down pipe is designed tobe connected with the usual pipe (not shown) to lead flushing water to awater closet bowl.

4 is the vertically-movable,casing which surrounds the down pipe 2 inthe tank 1, and is designed to be connectedat its upper end to a leverla or other means through the medium of which it may be convenientlyraised. The said casing is preferably, though not necessarily, of evendiameter throughout its height, and in its lower end wall 5, whichsnugly surrounds the down pipe 2, are apertures G, designed to enablethe water in the tank l to seek its level in the casing. l

Any suitable non-return means may be employed to normally permit theupward passage of water through the apertures 6 and check the returnthereof when the casing is raised with water therein. I prefer, however,to employ for the purpose the semi-annular clack valves 7, preferably ofsheet-metal, which are hinged at 8 to the casing 4 and are designed tonormally rest on the bottom wall of the casing or slightly above saidbottom wall.

Formed in the side wall of the casing 4L is an opening 9 which ispreferably, though not necessarily,provided to permit water to pass fromthe tank l into the casing 4 after thel siphon action. The said opening9 is controlled by an inwardly opening clack valve l0, hinged to thecasing wall as indicated by 1l.

The contraction 3 in the down pipe is arranged in a plane adjacent tothe bottom of the tank; the said contraction in the present embodimentbeing formed in a casting which forms the lower part or a continuationof the down pipe. In practice the contraction 8 serves to bring thewater into small compass-z'. e., contracts the descending body of water,and cuts out all air, and this without materially lessening the volumeof water which contributes to the production of a perfect vacuum in thecasing.

Vhile I prefer for the reason stated to employ the valve l0 as well asthe -non-return means at the bottom of the casing 4, I would have itdistinctly understood that when desired the non-return means at thebottom of the casing may alone be employed or the non-return means orvalve 10 at the side of the casing may alone be employed withoutdeparture from the scope of my claimed invention.

Y starts to ,flow` Vdown the pipe 2,' outward pressure on the valves 1srelieved and hence the Water in the tank is able to unseat said `valvesandv enter the casing; the valve 9 at this time serving to-v permit alarge volume of Water to pass fromthetank to the casing which makes theemployment or said valve Qpreferable.

another joperation. The flared mouth 2? tends to throw Water to thevertical center of pipe 2 which has the eiiect of sealing the pipeagainst the entryv of air through the closet duct.A y

`Having,described my invention, What I claiml and desire to secure byLetters-Pat ent, is: Y

l. ln a iiushing apparatus, the combination of ral tank, a down pipetherein, a ver'- ticallymovable easing also arranged in the Copiesof'this patent may be obtained for Ative cents each, by, addressing theCommissioner of Patents,

Subsequently to the operation, described, the casing 4 gravitates tothepo- A sition shown in Fig. l so as to be ready for tank and surroundingthe down pipe andV having an apertured bottom Wall and an apertured sideWall, non-return means in the casing complementary to the aperture inthe bottom Wall and the Vaperture in the side Wall, respectively,andmeans through the medium of WhichY theoasing may be raised.

2. In a flushing apparatus, the 'combinaf tion With the bottom Wall of aflushing tank, a casting arranged in said bottom Wall Vand having anvinterior contraction and an ey.`V

terior'thread and Valso having a flange to bear against one side'ofthetank Walha threaded clampingV mounted on Vthe casting and arranged tobear againstvthe' other side of said tank-Wall, aldoWn pipe threaded onitheupperportion of saidcast-A ing, a casing surrounding saidv down pipeand having an aperture for the entry of Water from the tank andnon-return vmeans for Vcontrolling said aperture, and means" the casmg`Washington, D. C.

